The first MACHO spectrum
Composite spectrum of the two very close objects seen on the HST image (ESO Press Photo eso0140). It is based on four 1500-second exposures that were obtained with the FORS2 multi-mode instrument at the 8.2-m VLT KUEYEN telescope on February 2, 2001. The presence of certain metal and alkali resonance lines, in particular of sodium (Na), is typical of a cool stellar object. Telluric molecular bands (from the Earth's atmosphere) are indicated with an earth-symbol.
Crédito:ESO
Sobre la imagen
Identificador: | eso0140b |
Tipo: | Observación |
Fecha de publicación: | 5 de Diciembre de 2001 |
Noticias relacionadas: | eso0140 |
Tamaño: | 1003 x 682 px |
Sobre el objeto
Nombre: | Hubble Space Telescope, MACHO, Spectrum, Very Large Telescope |
Tipo: | Early Universe : Cosmology : Phenomenon : Dark Matter Milky Way : Cosmology : Phenomenon : Lensing |
Categoría: | Cosmology Illustrations |
Colores y filtros
Banda | Longitud de onda | Telescopio |
---|---|---|
Infrarrojo I | 800 nm | Very Large Telescope FORS2 |